CN109417363A - Radio frequency time deviation calibration system and method - Google Patents
Radio frequency time deviation calibration system and method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
- H03F1/0222—Continuous control by using a signal derived from the input signal
- H03F1/0227—Continuous control by using a signal derived from the input signal using supply converters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0261—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A
- H03F1/0266—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A by using a signal derived from the input signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
- H04B17/14—Monitoring; Testing of transmitters for calibration of the whole transmission and reception path, e.g. self-test loop-back
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/411—Indexing scheme relating to amplifiers the output amplifying stage of an amplifier comprising two power stages
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
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- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
- H04B17/13—Monitoring; Testing of transmitters for calibration of power amplifiers, e.g. gain or non-linearity
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
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Abstract
Provide the system and method for the operation for improving radio frequency system.One embodiment provides radio frequency system, which includes the amplifier apparatus with the first data path and the second data path.Additionally, which includes controller, which instructs radio frequency system to send calibration signal, which includes the second part for motivating the second data path of first part and excitation of the first data path；Be based at least partially on the phase shift between the first sample of feedback signal and the first part, feedback signal the second sample and the second part between phase shift, or both determine the time deviation between the first data path and the second data path；And radio frequency system is at least instructed based on the time deviation to adjust the delay being applied on the first data path, second data path, or both.
Description
Background technique
The disclosure relates generally to radio frequency system, and more particularly, to for the amplifier apparatus in radio frequency system.
The part be intended to introduce to reader can be described below and/or the various aspects of claimed this technology are relevant
The various aspects in field.The discussion believed to be helpful in providing the reader with background information to facilitate a better understanding each of the disclosure
A aspect.Accordingly, it should be understood that these statements should be read in this connection, not as the approval to the prior art.
Electronic equipment often includes radio frequency system in order to the wireless biography with another electronic equipment and/or network progress data
It send.For the ease of wireless communication, radio frequency system may include transceiver, which exports the data that will be sent wirelessly at least
The analog representation of one-component (for example, phase and/or amplitude) will wirelessly be sent out as analog electrical signal, and/or output
The digital representation of at least one component of the data sent is as digital electric signal.Since electronic equipment can be with another electronic equipment
And/or network separates a certain distance, so the radio frequency system may include amplifier apparatus, the amplifier apparatus will be by that will simulate electricity
Signal is amplified to target magnitude (for example, intensity) to generate the analog electrical signal of amplification.
For the ease of generating the analog electrical signal of amplification, multiple data path processing electric signals are can be used in amplifier apparatus.
For example, amplifier apparatus may include the first number for handling the amplitude component of electric signal when implementing envelope elimination and recovery (EER)
According to second data path in path and the phase component of processing electric signal.It is based at least partially on the amplitude component, envelope data
The voltage of the adjustable power amplifier being supplied in amplifier apparatus in path.In this manner, power amplifier can be by amplitude point
Amount is reconfigured with phase component, and based on the voltage increase value supplied from the first data path.Therefore, the simulation of amplification
It is synchronized with each other to what degree that electric signal may depend on multiple paths to the fidelity (for example, accuracy) of electric signal.
Summary of the invention
The summary of certain embodiments disclosed herein is described below.It should be appreciated that it is only to be that these aspects, which are presented,
The brief summaries of these specific embodiments is provided to reader, and it is not intended to limit the scope of the present disclosure for these aspects.
In fact, the disclosure can cover many aspects that can not illustrate below.
This disclosure relates to for the radio frequency system convenient for wireless communicated data.In order to control output power, radio frequency system can
Including amplifier apparatus, the analog and/or digital which receives the data that will be wirelessly communicated is indicated, and at least
The target output of radio frequency system is based in part on to generate the analog electrical signal of amplification.In some embodiments, amplify
Device equipment may include multiple data paths, and multiple data path processing analog electrical signal is (for example, at least one component of data
Analog representation) and/or digital electric signal (for example, digital representation of at least one component of data).In order to generate amplification
Analog electrical signal, amplifier apparatus can combine the output data of (for example, mixing) from multiple data paths.In this way, amplification
Analog electrical signal is to the fidelities (for example, accuracy) of one or more electric signals and it is intended that the data of Wireless transceiver are desirable
Synchronization and/or time deviation certainly between multiple data paths.
For the ease of improving the fidelity (for example, accuracy) of the data transmitted wirelessly from radio frequency system, the disclosure is provided
For adjusting the technology of the time deviation between (for example, reduction) multiple data paths, so as to improve synchronization.In some embodiment party
In case, amplifier apparatus may include one or more delay apparatus, which can be operable at one
Or delay is introduced on multiple data paths.Therefore, the operation of the adjustable one or more delay apparatus of radio frequency system, for example, with
Reduce the time deviation between multiple data paths.
In some embodiments, for the ease of determining time deviation, controller can instruct radio frequency system to send calibration letter
Number, and the analog electrical signal of resulting transmission is based at least partially on to determine feedback signal.For example, controller can at least portion
Cross correlation point between ground sample based on feedback signal and calibration signal determines the total delay of radio frequency system.
In some embodiments, calibration signal may include multiple portions, and each part in multiple part is intended to swash
Encourage a data path in amplifier apparatus.For example, calibration signal may include with the amplitude component and constant phase changed
The first part of position component, so that excitation envelope data path is without excitation phase data path when sending.Additionally, it calibrates
Signal may include the second part of the phase component with constant amplitude component and change, thus excitation phase number when sending
According to path without motivating envelope data path.
In this manner, calibration signal also may make controller to can determine opposite in each of multiple data paths prolong
Late.For example, controller can by by a part of the calibration signal in excited data path with obtained by the transmission of the part it is anti-
The sample of feedback signal is compared to the relative delay relatively to determine data path.For the ease of determining sample, controller can be at least partly
Ground is adjusted feedback signal (for example, make feedback signal carry out time migration) based on the total delay of radio frequency system, such as with will be by
Delay caused by amplifier apparatus (and the data path therefore motivated) postpones with as caused by the other component in radio frequency system
Isolation.
In some embodiments, a part and the hair by the part that controller can be based at least partially on calibration signal
Phase shift between the sample for the feedback signal sent determines the relative delay of data path.For example, on envelope data path
Between the first sample for the feedback signal that relative delay can be obtained with the first part of calibration signal and by the transmission of first part
The first phase shift it is proportional.Additionally, the relative delay on phase data path can be with the second part of calibration signal and by
The linear component of the second phase shift between second sample of the feedback signal that the transmission of two parts obtains is proportional.
Detailed description of the invention
It is better understood various aspects of the disclosure when reading described in detail below and reference attached drawing, in the accompanying drawings:
Fig. 1 is the block diagram according to the electronic equipment with radio frequency system of embodiment；
Fig. 2 is the example according to the electronic equipment of Fig. 1 of embodiment；
Fig. 3 is the example according to the electronic equipment of Fig. 1 of embodiment；
Fig. 4 is the example according to the electronic equipment of Fig. 1 of embodiment；
Fig. 5 is the example according to the electronic equipment of Fig. 1 of embodiment；
Fig. 6 is the block diagram according to the radio frequency system of Fig. 1 with amplifier apparatus of embodiment；
Fig. 7 A is an exemplary block diagram according to the amplifier apparatus of Fig. 6 of embodiment；
Fig. 7 B is another exemplary block diagram according to the amplifier apparatus of Fig. 6 of embodiment；
Fig. 8 is the synchronous process of two data paths in the amplifier apparatus for making Fig. 6 according to embodiment
Flow chart；
Fig. 9 is the flow chart according to the process for determining the time deviation between two data paths of embodiment；
Figure 10 is the flow chart according to the process of the total delay of the radio frequency system for determining Fig. 6 of embodiment；
Figure 11 is according to the flow chart of the process for determining calibration signal of embodiment, and calibration signal is for when determining
Between deviation；
Figure 12 A is the plot according to the amplitude of the example calibration signal of embodiment；
Figure 12 B is the plot according to the phase of the example calibration signal of embodiment；
Figure 13 is the path delay of the first data path in the amplifier apparatus for determining Fig. 6 according to embodiment
Process flow chart；And
Figure 14 is the path delay of the second data path in the amplifier apparatus for determining Fig. 6 according to embodiment
Process flow chart.
Specific embodiment
One or more specific embodiments of the disclosure are described below.The embodiment of these descriptions is only current institute
The example of disclosed technology.Additionally, it is intended to the brief description of these embodiments be provided, can not retouched in the present specification
State all features that actual implementation is applied.It is to be appreciated that in the exploitation that any such actual implementation is applied, such as in any engineering
Or in design object, it is necessary to make the decision specific to many specific implementations to realize the objectives of developer, such as accord with
Closing can be the related to system of another specific implementation and the relevant constraint with business from a specific implementation variation.Moreover, it should
Understanding, such development effort can be complicated and time-consuming, but for from the those of ordinary skill to be benefited in the disclosure, this
The development effort of sample can be still design, preparation and the normal work to do of manufacture.
When introducing the element of various embodiments of the disclosure, article " one/one " and " should/described " be intended to mean
There are one or more of elements.In the terms "include", "comprise" and " having " are intended to be included in, and mean may be present
Add ons in addition to the element listed.Additionally, it should be understood that with reference to " embodiment " or " implementation of the disclosure
Scheme " is not intended to be interpreted to exclude the presence of the additional embodiment also in relation with recited feature.In addition, phrase A " base
In " B is intended to mean that A is based at least partially on B.Moreover, term "or" be intended to be included in (for example, logic or) and be not row
(for example, logic exclusive or) of his property.In other words, phrase A "or" B is intended to mean both A, B or A and B.
This disclosure relates to for convenient for the wireless communicated data between electronic equipment and another electronic equipment and/or network
Radio frequency system.For example, radio frequency system can for example, by via personal area network (for example, blueteeth network), local area network (for example, 802.11x
Wi-Fi network) and/or wide area network (for example, 4G or LTE cellular network) send the radio wave modulated in a manner of representing data
Wirelessly transmit data.In other words, radio frequency system can promote the Wireless transceiver of data using various wireless communication protocols.
Regardless of wireless communication protocol, the operation of radio frequency system can be substantially similar.For example, generally, processing circuit can
It generates using the digital representation of the data of transmission as digital electric signal, and transceiver (for example, transmitter and/or receiver) can
At least one component (for example, phase and/or amplitude component) of the data indicated by digital electric signal is converted into analog telecommunications
Number.Based on various factors (for example, wireless communication protocol, power consumption, distance etc.), mould can be transmitted wirelessly with various output powers
Quasi- electric signal.For the ease of controlling output power, which may include amplifier apparatus, which receives simulation
Electric signal, and the radio for example via antenna as modulation is used for using the analog electrical signal that target output output is amplified
Wave is sent.
The various specific implementations of amplifier apparatus are applicable to generate the analog electrical signal of amplification with target output.?
In some specific implementations, multiple data path processing analog electrical signals and/or digital electric signal is can be used in amplifier apparatus.Example
Such as, when implementing envelope elimination and recovery (EER), amplifier apparatus may include the envelope data road for handling the amplitude component of data
The phase data path of diameter and the phase component of processing data.Additionally, when implementing envelope-tracking (ET), amplifier apparatus can
Including handling the envelope data path of amplitude component and handling the amplitude component of data and the signal data road of both phase components
Diameter.
When using multiple data paths, amplifier apparatus can be based at least partially on each data from data path
The received output data in path generates the electric signal of amplification.For example, when implementing envelope elimination and recovery, power amplifier can be from
Phase data path receiving phase component, and receive and be based at least partially on the amplitude component generation from envelope data path
Supply voltage.Additionally, when implementing envelope-tracking, power amplifier can receive analog electrical signal from data path signal,
And receive the supply voltage at least generated based on the amplitude component from envelope data path.
In this manner, power amplifier can combine (for example, mixing) from the received output data of various data paths with life
At the analog electrical signal of amplification.For example, in order to generate the analog electrical signal of amplification corresponding with the point on analog electrical signal, function
Rate amplifier can will with from the corresponding output data of the first data path (for example, envelope data path) received point and with from
The corresponding output data combination of second data path (for example, phase data path or data path signal) received point.
However, in some instances, the delay changed on the first data path and the second data path can cause power to be put
Big device combines output data corresponding with the difference on analog electrical signal, this can influence the analog electrical signal of amplification to mould
The fidelity of quasi- electric signal, and therefore, this can influence the data for being intended to wirelessly transmit.In other words, the simulation electricity of amplification
The fidelity of signal may depend on the synchronization and/or time deviation between at least multiple data paths.In fact, in order to implement
Enough fidelities are provided when envelope elimination and recovery, time deviation is smaller than 40 picoseconds.
Correspondingly, present disclose provides for for example by convenient for multiple data roads in the amplifier apparatus of radio frequency system
The reduction of time deviation between diameter improves the skill of the fidelity (for example, accuracy) of the data transmitted wirelessly from radio frequency system
Art.In some embodiments, amplifier apparatus may include one or more delay apparatus, which can
It is operable to introduce delay on one or more data paths.For example, controller can instruct delay apparatus on the first data road
Time delay is introduced on diameter, it is inclined to reduce the time between the first data path and the second data path in amplifier apparatus
Difference, and therefore improve the simulation based on the amplification generated from the first data path and the received output data of the second data path
The accuracy of electric signal.
Correspondingly, in order to determine introducing time delay amount, controller can determine the time deviation between data path.
In some embodiments, for the ease of determining time deviation, controller can instruct radio frequency system to send calibration signal, and extremely
The analog electrical signal of the transmission obtained from the transmission of calibration signal is at least partly based on to determine feedback signal.Additionally, one
In a little embodiments, calibration signal may include multiple portions, and each part in multiple part is intended to exciting amplifier equipment
In a data path.For example, calibration signal may include that band changes when amplifier apparatus implements envelope elimination and recovery
Amplitude component and constant phase component first part's (for example, half), thus send when motivate envelope data path
Without excitation phase data path.Additionally, calibration signal may include the phase component with constant amplitude component and variation
Second part (for example, half), thus when sending excitation phase data path without motivate envelope data path.
Transmission based on calibration signal, controller can determine the total delay introduced by radio frequency system.In some embodiments
In, in order to determine total delay, controller can determine the sample of feedback signal, and determine the cross-correlation between sample and calibration signal
Property.For example, controller can determine that total delay is to lead to the lag of maximum (for example, peak value) cross correlation value.
It is based at least partially on total delay, controller can determine the relative delay of each data path.In some embodiment party
In case, controller can be by by a part of the calibration signal in excited data path and the feedback letter that is obtained by the transmission of the part
Number sample compared to relative delay relatively to determine data path.For the ease of determining that sample, controller can at least partly grounds
Feedback signal (for example, make feedback signal carry out time migration) is adjusted in the total delay of radio frequency system, such as so that by amplifying
Delay caused by device equipment is isolated with delay caused by the other component as radio frequency system.
Additionally, in some embodiments, controller can be based at least partially on a part of calibration signal and by this
Phase in-migration between the sample for the feedback signal that partial transmission obtains determines the relative delay of data path.For example, when amplification
When device equipment implements envelope elimination and recovery, controller can be based at least partially on the first part of calibration signal and by first
The first phase in-migration between the first sample for the feedback signal that the transmission divided obtains determines the relative delay in envelope data path.?
In some embodiments, the relative delay in envelope data path can be proportional to the first phase shift.Additionally, controller can at least portion
Divide ground based on the phase between the second part of calibration signal and the second sample of the feedback signal obtained by the transmission of second part
In-migration determines the relative delay in phase data path.In some embodiments, the relative delay in phase data path can be with
The linear component of two phase shifts is proportional.
It is based at least partially on relative data path delay, controller can determine the time deviation between data path.Example
Such as, time deviation can be the difference between the relative delay in envelope data path and the relative delay in phase data path.It is additional
Ground, when time deviation is greater than threshold value (for example, 40 picoseconds), controller can instruct delay apparatus adjusting to be applied to corresponding number
According to the delay on path.For example, when the relative delay that the relative delay in phase data path is greater than envelope data path is more than threshold
When value, controller can instruct delay apparatus increase to be applied to the delay on envelope data path.In this manner, radio frequency system can subtract
Few time deviation between multiple data paths in amplifier apparatus, consequently facilitating the amplification generated by amplifier apparatus
The improved fidelity of analog electrical signal.
One embodiment of the electronic equipment 10 including radio frequency system 12 is shown in order to help to illustrate, in Fig. 1.It such as will be
It is described more fully below, electronic equipment 10 can be any suitable electronic equipment, such as computer, mobile phone, portable
Media device, tablet computer, TV, virtual reality wear-type device, Vehicular instrument panel etc..Therefore, it is noted that Fig. 1
One example of only specific specific implementation, and be intended to illustrate the type that may be present in the component in electronic equipment 10.
In discribed embodiment, electronic equipment 10 includes radio frequency system 12, one or more input equipments 14, sheet
Ground memory 16, processor cores complex 18, one or more main memory store equipment 20, power supply 22, one or more
Input/output end port 24 and electronic console 26.Various parts described in Fig. 1 may include hardware element (for example, circuit), soft
The combination of part element (for example, tangible non-transitory computer-readable medium of store instruction) or hardware element and software element.It answers
When, it is noted that the component of various descriptions can be combined into less parts or be separated into additional component.For example, local storage 16
It may include in single component with main memory store equipment 20.
As depicted, processor cores complex 18 can be operated with local storage 16 and main memory store equipment 20
Ground coupling.Therefore, processor cores complex 18 is executable is stored in local storage 16 and/or main memory store equipment 20
In instruction with carry out operation, such as instruct radio frequency system 12 and another electronic equipment and/or network communication.In this way, processor
Kernel complex 18 may include one or more general purpose microprocessors, one or more processor (ASIC) specific to application,
One or more Field Programmable Logic Array (FPGA) or any combination of them.
Other than instruction, local storage 16 and/or main memory store equipment 20 can store will be by processor cores
The data of the processing of complex 18.Therefore, in some embodiments, local storage and/or main memory store equipment 20 can
Including one or more tangible non-transitory computer-readable mediums.For example, local storage 16 may include random access memory
(RAM), and main memory store equipment 20 may include that read-only memory (ROM), rewritable nonvolatile memory (such as dodge
Deposit memory, hard disk drive, CD etc.).
As depicted, processor cores complex 18 is also operatively coupled with the port I/O 24.In some embodiments
In, the port I/O 24 aloows electronic equipment 10 to be connected with other electronic equipments.For example, portable memory apparatus can connect
It is connected to the port I/O 24, so that processor cores complex 18 be enable to transmit data with portable memory apparatus.
Additionally, as depicted, processor cores complex 18 is operatively coupled to power supply 22.In some embodiment party
In case, power supply 22 can be to one or more components (such as the processor cores complex 18 and/or radio frequency system in electronic equipment 10
12) system provides power.Therefore, power supply 22 may include any suitable energy source, such as rechargeable lighium polymer (Li-
Poly) battery and/or alternating current (AC) power converter.
In addition, as depicted, processor cores complex 18 is operatively coupled with input equipment 14.In some implementations
In scheme, input equipment 14 can be interacted for example by receiving user's input convenient for carrying out user with electronic equipment 10.Therefore, defeated
Entering equipment 14 may include button, keyboard, mouse, Trackpad etc..Additionally, in some embodiments, input equipment 14 can wrap
Include the touch-sensing component in electronic console 26.In such embodiment, touch-sensing component can be touched by detection object
Generation and/or the position on 26 surface of electronic console are touched to receive user's input.
Other than allowing to carry out user's input, 26 displayable image frame of electronic console, such as operating system
Graphic user interface (GUI), application interface, static image or video content.As depicted, electronic console 26 can operate
It is coupled to processor cores complex 18 in ground.In this manner, electronic console 26 can be based at least partially on from processor cores
Complex 18 received image data shows picture frame.
As depicted, processor cores complex 18 is also operatively coupled with radio frequency system 12.As described above, radio frequency
System 12 can be convenient for transmitting data with another electronic equipment and/or network wireless.For example, radio frequency system 12 can make electronic equipment 10
It can be communicably coupled to personal area network (PAN) (such as blueteeth network), local area network (LAN) (such as 802.11x Wi-Fi network)
And/or wide area network (WAN) (such as 4G or LTE cellular network).In other words, radio frequency system 12 can allow to using various communications
Agreement and/or with various output powers (for example, send analog electrical signal intensity) wireless communicated data.
Even when using different communication protocol, the operating principle of radio frequency system 12 can also be substantially similar.For example, such as will be
It is described in more detail below, transceiver that can be used will indicate the data that are sent in digital form for radio frequency system 12
Digital electric signal is converted into analog electrical signal, to generate the mould of at least one (for example, phase and/or amplitude) component of data
It is quasi- to indicate.Additionally, radio frequency system 12 can be used amplifier apparatus that analog electrical signal is amplified to target output, thus raw
At the analog electrical signal of amplification.Be based at least partially on the analog electrical signal of amplification, the exportable modulation of radio frequency system 12 it is wireless
Electric wave is to be wirelessly communicated to another electronic equipment and/or network for data.Due to the similitude of operating principle, so retouching herein
The technology stated can be applied to any suitable radio frequency system 12, but regardless of communication protocol.
As described above, electronic equipment 10 can be any suitable electronic equipment.In order to help to illustrate, conjunction is shown in FIG. 2
An example of suitable electronic equipment 10 especially hand-held electronic equipment 10A.In some embodiments, hand-held electronic is set
Standby 10A can be portable phone, media player, personal data management device, handheld games platform etc..For example, hand-held is electric
Sub- equipment 10A can be smart phone, such as be purchased from any of Apple Inc.Model.
As depicted, hand-held electronic equipment 10A includes shell 28 (for example, shell).In some embodiments, shell
Body 28 can protect inner components from physical damage, and/or shielding internal part protects it from electromagnetic interference.Therefore,
Radio frequency system 12 can also be encapsulated in shell 28 and inside hand-held electronic equipment 10A.
Additionally, as depicted, shell 28 can surround electronic console 26.In discribed embodiment, electronics
The display of display 26 has the graphic user interface (GUI) 30 of 32 array of icon.In an illustrative manner, when pass through input equipment 14
Or electronic console 26 touch-sensing subassembly selection icon 32 when, application program can be started.
In addition, as depicted, input equipment 14 is opened by shell 28.As described above, input equipment 14 may make use
Family can be interacted with hand-held electronic equipment 10A.For example, input equipment 14 aloows user to activate or deactivate hand
It holds formula electronic equipment 10A, shield user interface navigation to home screen, the application that can configure user interface navigation to user
Curtain, provides volume control and/or toggles between vibration and Ring Mode activation speech recognition features.As depicted,
It is opened also by shell 28 port I/O 24.In some embodiments, the port I/O 24 may include for example being connected to external equipment
Audio jack.
In order in addition illustrate, suitable electronic equipment 10 especially the another of Flat electronic equipment 10B is shown in FIG. 3 and shows
Example.For example, Flat electronic equipment 10B can be purchased from Apple inc. anyModel.It is suitable to be shown in FIG. 4
The especially other example of computer 10C of electronic equipment 10.For example, computer 10C can be to be purchased from appointing for Apple Inc.
WhatOrModel.Suitable electronic equipment 10 especially another example of wrist-watch 10D is shown in FIG. 5.
For example, wrist-watch 10D can be any Apple for being purchased from Apple Inc.Model.
As depicted, Flat electronic equipment 10B, computer 10C and wrist-watch 10D each also include electronic console 26,
Input equipment 14, the port I/O 24 and shell 28.Therefore, in some embodiments, radio frequency system 12 can be encapsulated in by shell 28
In Flat electronic equipment 10B, computer 10C and/or wrist-watch 10D.As described above, radio frequency system 12 can be convenient for setting with other electronics
Standby and/or network wireless transmits data.
An example of radio frequency system 12 is shown in order to help to illustrate, in Fig. 6.In discribed embodiment, penetrate
Display system 12 is communicably coupled to digital data source 36, the exportable number that will be sent from electronic equipment 10 of the digital data source 36
According to digital representation as digital electric signal.Correspondingly, in some embodiments, digital data source 36 may include in processor
In kernel complex 18 and/or in individual processing circuit (such as baseband processor or modem).
Additionally, in discribed embodiment, radio frequency system 12 includes transceiver 38, amplifier apparatus 40, filtering
Equipment 42, antenna 44, controller 46 and feedback local oscillator 48.In some embodiments, controller 46 can be controlled substantially
The operation of radio frequency system 12.It is in other embodiments, one or more independent although being depicted as single controller 46
Controller 46 can be used for controlling transceiver 38, amplifier apparatus 40, filter apparatus 42, antenna 44 and/or the local vibration of feedback
Swing the operation of device 48.
For the ease of control operation, controller 46 may include processing equipment 50 and memory devices 52.In some embodiment party
In case, processing equipment 50 can be performed the instruction being stored in memory devices 52 and/or process data and instruct transceiver with determination
38, amplifier apparatus 40, filter apparatus 42, antenna 44 and/or feedback local oscillator 48 carry out the control command of control action.
In other embodiments, processing equipment 50 can be hard-wired with the instruction of determining control command when implemented.Additionally, exist
In some embodiments, processing equipment 50 may include in processor cores complex 18 and/or individually in processing circuit, and
Memory devices 52 may include in local storage 16, main memory store equipment 20 and/or another tangible non-transient computer
In readable medium.
In operation, transceiver 38 can receive digital electric signal, and generate analog electrical signal, which provides
The analog representation of at least one component of data to be sent.In some embodiments, analog electrical signal can be by angle tune
System, and therefore indicated using same phase (I) component and orthogonal (Q) component.In such embodiment, reality can be expressed as follows
(for example, amplitude) component:
Wherein, A is amplitude component, and I is in-phase component, and Q is quadrature component.Additionally, in such embodiment,
Compound (for example, phase) component can be expressed as follows:
Wherein, P is phase component, and I is in-phase component, and Q is quadrature component.
Due to analog electrical signal output power can very little, so amplifier apparatus 40 can receive and amplification analog telecommunications
Number.As described above, the various specific implementations of amplifier apparatus 40 can be used for amplifying analog electrical signal.In some specific implementations,
Amplifier apparatus 40 can utilize multiple (for example, two or more) data paths, multiple (for example, two or more) number
At least part of analog electrical signal and/or digital electric signal is respectively handled according to path.For example, in discribed embodiment
In, amplifier apparatus 40 utilizes the first data path 54 and the second data path 56.Then, mixing can be used in amplifier apparatus 40
Device 58 combines the data exported from the first data path 54 and the second data path 56 to be put with generating under target output
Big analog electrical signal.
In order to help to illustrate, Fig. 7 A shows the amplifier apparatus 40A's with envelope elimination and recovery (EER) specific implementation
One example.As depicted, amplifier apparatus 40A receives analog electrical signal 60, and exports the analog electrical signal 62 of amplification.
For the ease of generating the analog electrical signal 62 of amplification, the first data path 54 can be envelope data path 54A, the envelope data road
Diameter 54A is based at least partially on the amplitude component operation of analog electrical signal 60, and the second data path 56 can be phase data
Path 56A, phase data path 56A are based at least partially on the phase component operation of analog electrical signal 60.Additionally, it is wrapping
Network eliminate and restore specific implementation in, mixer 58 may include power amplifier 66 (for example, switch-mode power amplifier) and
Filter 68 (for example, low-pass filter), in order to by that will be received from envelope data path 54A and phase data path 56A
Output data combination producing amplification analog electrical signal 62.
In discribed embodiment, envelope data path 54A includes envelope detector 70,72 and of the first delay apparatus
Envelope voltage amplifier 74.As described above, envelope data path 54A can be based at least partially on the amplitude point of analog electrical signal 60
Amount is to operate.Therefore, in some embodiments, envelope detector 70 can extract amplitude signal, the vibration from analog electrical signal 60
Width signal designation amplitude component.In other embodiments, transceiver 38 can be for example straight by amplitude signal via digital electric signal
It connects and is transmitted to envelope data path 54A, so that envelope detector 70 be made to become unnecessary.
After determining amplitude signal, the first delay apparatus 72 can apply amplitude signal and postpone.In some embodiments
In, the retardation for being applied to amplitude signal may be based on from the received delay control command of controller 46 in range (for example, 0ms
It is adjustable in 50ms).In this manner, it is adjustable by retardation that the first delay apparatus 72 applies to control envelope data road
When diameter 54A outputs data to power amplifier 66, for example, in order to improve it is synchronous with phase data path 56A's (for example,
Reduce time deviation).
Output data from envelope data path 54A can for generated by envelope voltage amplifier 74 and via power rail
75 are supplied to the envelope signal of power amplifier 66.In some embodiments, envelope voltage amplifier 74 can pass through at least portion
The voltage of target output amplification amplitude signal of the ground based on radio frequency system 12 is divided to generate envelope signal, the target output
It can be by being indicated from the received target output control command of controller 46.For example, envelope voltage amplifier 74 can be with target
Output power increases and increases amplification, and reduces and amplify as target output reduces.
For the ease of generating envelope signal, envelope voltage amplifier 74 can receive the electrical power from power supply 22.Some
In embodiment, electrical power can have constant direct current (DC) voltage, and envelope voltage amplifier 74 may include switching mode
Power amplifier.In such embodiment, switch-mode power amplifier can be by being based at least partially on amplitude signal tune
Section constant DC voltage is supplied to the duration of power rail 75 to promote to generate envelope signal.
Additionally, in discribed embodiment, phase data path 56A includes limiter 76, the second delay apparatus
78 and send local oscillator 80.As described above, phase data path 56A can be based at least partially on the phase of analog electrical signal 60
Position component operates.Therefore, in some embodiments, limiter 76 can extract phase signal, the phase from analog electrical signal 60
Position signal designation phase component.In other embodiments, phase signal can be transferred directly to phase data road by transceiver 38
Diameter 56A, so that limiter 76 be made to become unnecessary.
After determining phase signal, the second delay apparatus 78 can apply phase signal and postpone.In some embodiments
In, the retardation for being applied to phase signal may be based on from the received delay control command of controller 46 in range (for example, 0ms
It is adjustable in 50ms).In this manner, it is adjustable by retardation that the second delay apparatus 78 applies to control phase data road
When diameter 56A outputs data to power amplifier 66, for example, in order to improve it is synchronous with envelope data path 54A's (for example,
Reduce time deviation).
Output data from phase data path 56A can be the frequency conversion phase generated by transmission local oscillator 80
Signal.In some embodiments, sending local oscillator 80 can be defeated by being based at least partially on the target of radio frequency system 12
The frequency that frequency adjusts phase signal out generates frequency conversion phase signal, which can be by receiving from controller 46
Target output frequency control command instruction.For example, phase signal can be greater than when target output frequency by sending local oscillator 80
Frequency when make phase signal carry out up-conversion, and when target output frequency be less than phase signal frequency when make phase signal
Carry out down coversion.
As described above, power amplifier 66 can receive the output data from envelope data path 54A (for example, envelope is believed
Number) and output data (for example, frequency conversion phase signal) from phase data path 56A, and envelope data will be come from
The output data (for example, envelope signal) of path 54A and output data from phase data path 56A are (for example, frequency conversion
Phase signal) combination.In some embodiments, power amplifier 66 can be put for switch mode (for example, D class or E class) power
Big device.Therefore, in such embodiment, power amplifier 66 is by being connected output section 82 based on frequency conversion phase signal
Output data is combined to the power rail 75 or ground connection that carry envelope signal.For example, working as the very high (example of frequency conversion phase signal
Such as, it is higher than threshold voltage) when, output section 82 can be connected to power rail 75 by power amplifier 66.On the other hand, work as frequency conversion
When phase signal very low (for example, being lower than threshold voltage), output section 82 can be connected to ground connection by power amplifier 66.
Therefore, in some embodiments, power amplifier 66 (for example, class-D amplifier) can be based on envelope signal and frequency
Rate converts phase signal and generates pulse width modulating signal.In such embodiment, in order to generate the analog electrical signal of amplification
62, filter 68 can pulse-width modulated signal implementation filtering operation.In some embodiments, filter 68 is practicable low
Filtering operation, to make pulse width modulating signal smoothly to generate the analog electrical signal 62 amplified.
In other embodiments, power amplifier 66 (for example, E class A amplifier A) may include and 82 series coupled of output section
Inductor capacitor (LC) circuit, with the capacitor of lc circuit parallel coupled, and be coupled to the inductor of power rail 75.?
In such embodiment, power amplifier 66 can directly generate the analog electrical signal 62 of amplification, to make individual filter 68
As unnecessary.In this manner, the implementable envelope elimination and recovery of amplifier apparatus 40A is to be based at least partially on radio frequency system
12 target output and/or target output frequency generate the analog electrical signal 62 of amplification.
Other than envelope elimination and recovery, other specific implementations of amplifier apparatus 40 can also be easy to use the first data
Path 54 and the second data path 56 generate the analog electrical signal 62 of amplification.For example, Fig. 7 B is shown with envelope-tracking (ET)
The amplifier apparatus 40B of specific implementation.As depicted, amplifier apparatus 40B receives analog electrical signal 60, and exports amplification
Analog electrical signal 62.
For the ease of generating the analog electrical signal 62 of amplification, the first data path 54 can be to be based at least partially on simulation electricity
The envelope data path 54A of the amplitude component operation of signal 60, and the second data path 56 can be to be based at least partially on mould
The data path signal 56B of quasi- electric signal 60 (for example, both amplitude and phase component) operation.Additionally, have in envelope-tracking
Body implement in, mixer 58 may include power amplifier 66 (for example, linear model power amplifier), in order to by combination from
Envelope data path 54A and the received output data of data path signal 56B generate the analog electrical signal 62 of amplification.
In some embodiments, the envelope data path 54A in envelope-tracking specific implementation can be operationally similar
In the envelope data path 54A in envelope elimination and recovery is embodied.Therefore, envelope data path 54A can for example using
Envelope detector 70 and/or directly from transceiver 38 determine amplitude signal as digital electric signal.Additionally, the first delay apparatus
72 can apply delay to amplitude signal, which may be based on from the received delay control command of controller 46 in range
(for example, adjustable in 0ms to 50ms) such as synchronous with data path signal 56B's (for example, when reducing in order to improve
Between deviation).In addition, envelope voltage amplifier 74 can be amplified by being based at least partially on the target output of radio frequency system 12
The voltage of amplitude signal generates envelope signal, which can be by controlling from the received target output of controller 46
Order is to indicate.
On the other hand, data path signal 56B, the letter can be utilized instead of phase data path 56A, amplifier apparatus 40B
Number path 56B includes the second delay apparatus 78 and transmission local oscillator 80.As described above, data path signal 56B can
Both phase component and amplitude components of analog electrical signal 60 are based at least partially on to operate.Therefore, in some embodiments
In, data path signal 56B directly can receive analog electrical signal 60 from transceiver 38.
After determining analog electrical signal 60, the second delay apparatus 78 can apply analog electrical signal 60 and postpone.Some
In embodiment, be applied to phase signal retardation can based on from the received delay control command of controller 46 come in range
(for example, being adjusted in 0ms to 50ms).In this manner, the adjustable retardation applied by the second delay apparatus 78, to control signal
When data path 56B outputs data to power amplifier 66, such as synchronous with envelope data path 54A in order to improve
(for example, reducing time deviation).
Output data from data path signal 56B can be believed for the frequency conversion generated by transmission local oscillator 80
Number.In some embodiments, sending local oscillator 80 can be exported by being based at least partially on the target of radio frequency system 12
Frequency adjusts the frequency of analog electrical signal 60 to generate frequency conversion signal, which can be by receiving from controller 46
Target output frequency control command indicate.For example, simulation electricity can be greater than when target output frequency by sending local oscillator 80
Analog electrical signal 60 is set to carry out up-conversion when the frequency of signal, and when target output frequency is less than the frequency of analog electrical signal 60
When make analog electrical signal 60 carry out down coversion.
As described above, power amplifier 66 can receive the output data from envelope data path 54A (for example, envelope is believed
Number) and output data (for example, frequency conversion signal) from data path signal 56B, and envelope data path will be come from
The output data (for example, envelope signal) of 54A and from data path signal 56B output data (for example, frequency conversion believe
Number) combine to generate the analog electrical signal 62 of amplification.In some embodiments, power amplifier 66 can be linear model (example
Such as, A class, B class, AB class or C class) power amplifier.Therefore, in such embodiment, power amplifier 66 can by with
The generally proportionate mode of frequency conversion signal adjusts the electric work that output section 82 is flow to from the power rail 75 for carrying envelope signal
Rate combines output data.For example, power amplifier 66 can proportionally increase from power rail when frequency conversion signal increases
75 are supplied to the electrical power of output 82.On the other hand, when frequency conversion signal reduces, power amplifier 66 can proportionally subtract
The small power that output section 82 is supplied to from power rail 75.In this manner, the implementable envelope-tracking of amplifier apparatus 40B, at least
The target output and/or target output frequency that are based in part on radio frequency system 12 generate the analog electrical signal 62 of amplification.
Radio frequency system 12 described in Fig. 6 is returned to, in some instances, transceiver 38 and/or amplifier apparatus 40 can be
Noise such as parasitism or out-of-band noise are introduced in the analog electrical signal 62 of amplification.Therefore, for the ease of improving from radio frequency system 12
The accuracy of the data of wireless transmission, filter apparatus 42 can carry out filtering operation to the analog electrical signal 62 of amplification, be drawn with removing
The noise entered, and export the analog electrical signal of filtering.It is based at least partially on the analog electrical signal of filtering, antenna 44 is modulated
Radio wave is to be wirelessly communicated to another electronic equipment and/or network for the analog electrical signal of transmission.
The feedback signal for being based at least partially on the analog electrical signal of transmission for example can also feed back control via coupler
Device 46 processed.In some embodiments, the frequency next life for the analog electrical signal that feedback local oscillator 48 can be sent by adjusting
At feedback signal.For example, feedback local oscillator 48 can be by being converted to analog electrical signal 60 for the analog electrical signal of transmission
Frequency domain generates feedback signal.In other words, the mode that feedback local oscillator 48 can be opposite with local oscillator 80 is sent
To adjust frequency.For example, feedback local oscillator 48 can make to become in frequency when sending local oscillator 80 and making frequency down conversion
Frequently, and when sending local oscillator 80 and making frequency upconversion make frequency down conversion.
In discribed embodiment, for the ease of clear, feedback local oscillator 48 is depicted as individual component.
However, in some embodiments, feedback local oscillator 48 may include in sending local oscillator 80.In other words, exist
In such embodiment, sending local oscillator 80 can be used for carrying out frequency conversion to analog electrical signal 60 and/or phase signal
In order to generate the analog electrical signal of transmission, and frequency conversion is carried out to the electric signal of transmission in order to determine feedback signal.
It is based at least partially on feedback signal, controller 46 can monitor and/or control (for example, adjusting) radio frequency system 12
Operation.For example, in some embodiments, controller 46 can be based at least partially on feedback signal and determine the analog telecommunications sent
Number real output, and instruct radio frequency system 12 to adjust behaviour when real output and target output change
Make.Additionally, in some embodiments, controller 46 can be based at least partially on feedback signal to determine the first data path
54 and the second time deviation between data path 56, and guide the first delay apparatus 72 and/or the second delay apparatus 78 corresponding
Ground adjusts the delay applied.
One of the process 81 for controlling the delay being applied in radio frequency system 12 is shown in order to help to illustrate, in Fig. 8
A embodiment.Generally, process 81 includes the time deviation (process determined between the first data path and the second data path
Frame 84), determine whether time deviation is greater than threshold value (decision block 86), maintains to be applied to first when time deviation is no more than threshold value
Delay (process frame 88) on data path and the second data path, and adjusted when time deviation is greater than threshold value and be applied to the
Delay (process frame 90) on one data path and/or the second data path.In some embodiments, process 81 can be by making
It is executed with processing circuit such as processing equipment 50 and is stored in tangible non-transitory computer-readable medium such as memory devices 52
In instruction implement.
Correspondingly, in some embodiments, controller 46 can determine the first data path 54 and the second data path 56
Between time deviation (decision block 86).In some embodiments, time deviation can indicate power amplifier 66 when from
When one data path 54 receives output data and power amplifier 66 from corresponding with the identical point on analog electrical signal 60
Second data path 56 receives duration (for example, dock cycles or time) difference between output data.In this way, the time is inclined
Difference may depend on the relative delay of at least relative delay of the first data path 54 and the second data path 56.
The process for determining the time deviation between the first data path 54 and the second data path 56 is shown in FIG. 9
92 embodiment.Generally, process 92 includes the total delay (process frame 94) for determining radio frequency system, determines the first data
The relative delay (process frame 96) in path and the relative delay (process frame 98) for determining the second data path.In some implementations
In scheme, process 92 can execute that be stored in tangible non-transient computer readable by using processing circuit such as processing equipment 50
Instruction in medium such as memory devices 52 is implemented.
Correspondingly, in some embodiments, controller 46 can determine the total delay (process frame 94) of radio frequency system 12.?
In some embodiments, total delay may indicate when to be input to digital electric signal in transceiver 38 and when receive with controller 46
By the corresponding duration difference sent between obtained feedback signal.Therefore, total delay may include by the first data path
54 and second in data path 56 and radio frequency system 12 other component (such as transmission local oscillator 80 and/or feedback this
Ground oscillator 48) caused by delay.
An embodiment for the process 100 for determining the total delay of radio frequency system 12 is shown in Figure 10.Generally, mistake
Journey 100 includes the sample for sending calibration signal (process frame 102), determining feedback signal (process frame 104), determining feedback signal
Cross correlation (process frame 106) between (process frame 105) and determining calibration signal and feedback signal.In some embodiment party
In case, process 100 can execute that be stored in tangible non-transient computer readable by using processing circuit such as processing equipment 50
Instruction in medium such as memory devices 52 is implemented.
Correspondingly, in some embodiments, controller 46 can instruct radio frequency system 12 to send calibration signal (process frame
102).Additionally, in some embodiments, controller 46 can instruct radio frequency system 12 continuously repeat calibration signal hair
It send.In addition, in some embodiments, calibration signal can be determined in advance and store for example in memory devices 52.Therefore,
In such embodiment, controller 46 can retrieve calibration signal, and calibration signal is supplied to radio frequency system 12, for example,
It direct supplies to transceiver 38 and/or is supplied to transceiver 38 via digital data source 36.
As described above, in some embodiments, calibration signal may include multiple portions.For example, calibration signal may include
For determining first part's (for example, half) of the relative delay of the first data path 54.Additionally, calibration signal may include using
In the second part (for example, half) for the relative delay for determining the second data path 56.For example, when calibration signal continues for 2N
Between signal when, first part can be the first N duration signal, and second part can be the 2nd N duration signal.Accordingly
Ground, in such embodiment, calibration signal can be confirmed as the total delay for allowing to determine radio frequency system 12, the first data road
The relative delay of the relative delay of diameter 54 and the second data path 56.
An embodiment party for determining the process 108 of suitable calibration signal is described in order to help to illustrate, in Figure 11
Case.Generally, process 108 includes determining only motivate the first signal (process frame 110) of the first data path, determine and only motivate the
The second signal (process frame 112) of two data paths and by the first signal and the second signal cascade (process frame 114).One
In a little embodiments, process 108 can be stored in tangible non-transient calculating by using the processing circuit such as execution of processing equipment 50
Instruction in machine readable medium such as memory devices 52 is implemented.It will be described to illustrate with succinct purpose, process 108
To implement in controller 46.However, in other embodiments, process 108 can by individual calibration system (for example, by
Electronic equipment that the manufacturer of radio frequency system 12 uses) implement.
In exemplary embodiment, controller 46 can determine the first signal (process for only motivating the first data path 54
Frame 110) and the determining second signal (process frame 112) for only motivating the second data path 56.In other words, controller 46 can be at least
It is based in part on estimated first data path 54 and how the second data path 56 operates to determine the first signal and the second signal.
As described above, it can be embodied in the difference of amplifier apparatus 40 in the operation of the first data path 54 and the second data path 56
Between change.In other words, it determines for the first signal and the second letter in envelope elimination and recovery (EER) amplifier apparatus 40A
It number may differ from determining the first signal and the second signal in envelope-tracking (ET) amplifier apparatus 40B.However, in order to just
In succinct, reference envelope is eliminated and restores amplifier apparatus 40A to describe the determination of the first signal and the second signal.
As described above, envelope data path 54A can be at least partly in envelope elimination and recovery amplifier apparatus 40A
Operated based on the amplitude component for the data that will be transmitted wirelessly, and phase data path 56A can be based at least partially on by
The phase components of the data to be transmitted wirelessly operates.Accordingly, it can be determined that the first signal makes the amplitude component of the first signal be to become
Change, and the phase component of the first signal is constant.Additionally, it may be determined that second signal makes the amplitude component of second signal
It is constant, and the phase component of second signal is variation.
In order to generate calibration signal, controller 46 can be cascaded the first signal and the second signal (process frame 114).Therefore,
In some embodiments, controller 46 can additionally determine that the first signal and the second signal are believed in order to the first signal and second
Smooth transition between number.For example, it may be determined that second signal makes the initial value of the amplitude component of second signal be substantially equal to first
The end value of amplitude component at the end of signal.Additionally, it may be determined that second signal makes the initial value of the phase component of second signal
Being substantially equal to terminates the end value of phase position component in the first signal.
In order to help to illustrate, showing in figs. 12 a and 12b can be together with envelope elimination and recovery amplifier apparatus 40A
One example of the calibration signal used.Specifically, Figure 12 A includes the plot 113 with amplitude curve 116, amplitude curve
The amplitude component of calibration signal of 116 descriptions from t0 to tN and from tN to t2N.Additionally, Figure 12 B includes having phase curve
120 plot 118, the phase component of calibration signal of the phase curve 120 description from t0 to tN and from tN to t2N.
It in some embodiments, can be as got off to express calibration signal described in Figure 12 A and Figure 12 B:
Wherein C (t) is the calibration signal in time t, and ω is angular frequency tuner parameters, and D and E are real value tuner parameters systems
Number, and α, β and γ are tuner parameters.Therefore, as described in Figure 12 A and Figure 12 B, in t0 to during tN, calibration signal
Amplitude component vibrates between 1 and 0, and the phase component of calibration signal is 0.Correspondingly, between t0 and tN, calibration signal can
It motivates envelope data path 54A without excitation phase data path 56A, and therefore can be the first signal.Additionally, as schemed
Describe in 12A and Figure 12 B, in tN to during t2N, the phase component of calibration signal approximately exponentially increases, and calibrates letter
Number amplitude component be 1.Correspondingly, between tN and t2N, calibration signal can excitation phase data path 56A, without motivate wrap
Network data path 54A, and therefore can be second signal.In this way, it may be determined that the calibration that will be sent in radio frequency system 12
Signal.
Back to the process 100 of Figure 10, controller 46 can determine sending by the calibration signal from radio frequency system 12
The feedback signal (process frame 102) arrived.As described above, in some embodiments, feedback local oscillator 48 can be for example, by
The frequency applied by transmission local oscillator 80 is based at least partially on to adjust to adjust the simulation for the transmission for being supplied to antenna 44
The frequency of electric signal generates feedback signal.In this way, controller 46 can receive the calibration letter of origin self feed back local oscillator 48
Number the feedback signal that sends of repetition.
Additionally, controller 46 can determine sample (process frame 105) from feedback signal.In some embodiments, it controls
Device 46 can be based at least partially on the duration of calibration signal to determine sample.For example, the duration when calibration signal is
When 2N, the 2N duration of feedback signal is may be selected as sample in controller.
In order to determine the total delay of radio frequency system 12, controller 46 can be based at least partially on calibration signal and feedback signal
Sample determine cross correlation (process frame 106).For example, in some embodiments, controller 46 can hold calibration signal
Row Fast Fourier Transform (FFT) (FFT) indicates the first discrete Fourier transform (DFT) of the calibration signal in frequency domain to determine.It is additional
Ground, controller 46 can execute Fast Fourier Transform (FFT) (FFT) to calibration signal to determine indicate sample signal in frequency domain the
Two discrete Fourier transforms (DFT).
By determining cross-correlation function, controller based on the first discrete Fourier transform and the second discrete Fourier transform
46 can determine the similitude of calibration signal and sample as the function to relatively lag behind between calibration signal and sample.Therefore, lead to
It crosses and cross correlation is converted back to time domain, controller 46 can determine the similitude of calibration signal and sample under various lagged values.
In this manner, controller 46 can determine that lagged value corresponding with peak value cross-correlation magnitude is the total delay of radio frequency system 12.
Back to process 92 described in Fig. 9, controller 46 can determine relative delay (the process frame of the first data path 54
96).In some embodiments, the total delay of radio frequency system 12 can be based at least partially on to determine the first data path 54
Relative delay.By in this way determine relative delay, controller 46 will can postpone as caused by amplifier apparatus 40 and by
In radio frequency system 12 other component (such as transmission local oscillator 80 and/or feedback local oscillator 48) caused by delay every
From.
One for the process 122 for determining the relative delay of the first data path 54 is shown in order to help to illustrate, in Figure 13
A embodiment.Generally, process 122 includes the first part's (process frame 124) for sending calibration signal, determines feedback signal
(process frame 126) sample (process frame 128) for determining feedback signal corresponding with the first part of calibration signal, determines school
Phase shift (process frame 130) between the first part and sample of calibration signal and the phase that the first data path is determined based on phase shift
To delay (process frame 132).In some embodiments, process 122 can be held by using processing circuit such as processing equipment 50
The row instruction that is stored in tangible non-transitory computer-readable medium such as memory devices 52 is implemented.
Therefore, in some embodiments, controller 46 can instruct the first part of the transmission calibration signal of radio frequency system 12
(process frame 124).In some embodiments, first part may include the first signal, which motivates the first data road
Diameter 54 is without motivating the second data path 56.Additionally, controller 46 can determine feedback signal (process frame 126).As described above,
In some embodiments, feedback local oscillator 48 can generate feedback letter by adjusting the frequency of the analog electrical signal sent
Number.Therefore, in such embodiment, controller 46 can receive feedback signal from feedback local oscillator 48.
From feedback signal, controller 46 can determine sending by the first part of the calibration signal from radio frequency system 12
The first sample (process frame 128) arrived.For the ease of determining first sample, controller 46 can be based at least partially on radio frequency system
12 total delay adjusts feedback signal.For example, controller 46 can make feedback signal time migration total delay with will be by amplifier
Delay caused by equipment 40 is isolated with delay caused by the other component as radio frequency system 12.
After adjust feedback signal, controller 46 can be held by being based at least partially on the first part of calibration signal
Continue a part of selection of time feedback signal to determine first sample.For example, when the duration of first part is N, control
Device 46 can select N duration portions to determine first sample by the feedback signal adjusted from delay.Due to calibration signal
First part motivate the first data path 54 without motivate the second data path 56, so controller 46 can determine first sample with
It will postpone to postpone to be isolated with as caused by the second data path 56 as caused by the first data path 54.
When use calibration signal described in formula (3), the first part with calibration signal is (for example, 0≤t≤N-
1) the corresponding first sample of transmission can be as follows:
F1(t)=C+Dcos (2 π ω (t+ τ1)) (4)
Wherein F1It (t) is first sample corresponding with the first part of calibration signal, ω is angular frequency tuner parameters, C
It is tuner parameters coefficient with D, and τ1It is the relative phase delay of the first data path 54.In some instances, due to by sending out
It send local oscillator 80 and/or feeds back the phase indeterminacy that local oscillator 48 introduces, so C and/or D can be complex value.
Additionally, controller 46 can determine the phase shift between the first part of calibration signal and the first sample of feedback signal
(process frame 130).In some embodiments, for the ease of determining phase shift, controller 46 can determine as follows Nx5 matrix:
M1[i, 1]=sin (2 π ω (i-1))；I=[1:N] (5)
M1[i, 2]=cos (2 π ω (i-1))；I=[1:N]
M1[i, 3]=jsin (2 π ω (i-1))；I=[1:N]
M1[i, 4]=jcos (2 π ω (i-1))；I=[1:N]
M1[i, 5]=1；I=[1:N]
Wherein M1It is Nx5 matrix, N is the duration of the first part of calibration signal, and ω is angular frequency tuning ginseng
Number.Based on Nx5 matrix, controller 46 can determine as follows 5x1 vector:
θ=(M1 TM1)-1M1 TF1 (6)
Wherein θ is 5x1 vector, F1It is the first sample of feedback signal, and M1It is the Nx5 square described in formula (5)
Battle array.In such embodiment, it is based on 5x1 vector, controller 46 can determine as follows phase shift:
WhereinIt is phase shift, θ [1] is the first entry in 5x1 vector, and θ [2] is the second entry in 5x1 vector, θ [3]
It is the third entry in 5x1 vector, and θ [4] is the fourth entry in 5x1 vector.
It is based at least partially on phase shift, controller 46 can determine the relative delay (process frame 132) of the first data path 54.
When using the calibration signal of formula (3), the relative delay of the first data path 54 can be with the first part of calibration signal and anti-
Phase shift between the first sample of feedback signal is proportional.For example, the relative delay of the first data path 54 can be determined as follows:
Wherein τ1It is the relative phase delay of the first data path 54,It is phase shift, and ω is angular frequency tuner parameters.
In this manner, controller 46 can determine the relative phase delay of the first data path 54.
The process 92 of Fig. 9 is returned to, controller 46 also can determine the relative delay (process frame 98) of the second data path 56.?
In some embodiments, the total delay that the relative delay of the second data path 56 can be based at least partially on radio frequency system 12 comes true
It is fixed.By determining that relative delay, controller 46 can will postpone as caused by amplifier apparatus 40 and by radio frequency systems in this way
Delay isolation caused by other component (such as transmission local oscillator 80 and/or feedback local oscillator 48) in system 12.
The process for determining the relative phase delay of the second data path 56 is described in order to help to illustrate, in Figure 14
134 embodiment.Generally, process 134 includes the second part (process frame 136) for sending calibration signal, determines instead
Feedback signal (process frame 138), the sample (process frame 140) for determining corresponding with the second part of calibration signal feedback signal,
It determines the phase shift (process frame 142) between the second part and sample of calibration signal and the second number is determined based on phase in-migration
According to the relative delay (process frame 144) in path.In some embodiments, process 134 can such as be located by using processing circuit
The instruction that the execution of equipment 50 is stored in tangible non-transitory computer-readable medium such as memory devices 52 is managed to implement.
Correspondingly, in some embodiments, controller 46 can instruct second of the transmission calibration signal of radio frequency system 12
Divide (process frame 136).In some embodiments, second part may include second signal, which motivates the second data
Path 56 is without motivating the first data path 54.Additionally, controller 46 can determine feedback signal (process frame 138).Institute as above
It states, in some embodiments, feedback local oscillator 48 can be generated anti-by adjusting the frequency of the analog electrical signal sent
Feedback signal.Therefore, in such embodiment, controller 46 can receive feedback signal from feedback local oscillator 48.
From feedback signal, controller 46 can determine sending by the second part of the calibration signal from radio frequency system 12
The second sample (process frame 128) arrived.For the ease of determining that the second sample, controller 46 can be based at least partially on radio frequency system
The duration of the first part of 12 total delay and calibration signal adjusts feedback signal.For example, controller 46 can make to feed back
Signal time deviates the duration of the first part of total delay and calibration signal, will postpone as caused by amplifier apparatus 40
It is isolated with delay caused by the other component as radio frequency system 12.
After adjust feedback signal, controller 46 can be held by being based at least partially on the second part of calibration signal
Continue a part of selection of time feedback signal to determine the second sample.For example, when the duration of second part is N, control
Device 46 can select N duration portions to determine the second sample by the feedback signal adjusted from delay.Due to calibration signal
Second part motivate the second data path 56 without motivate the first data path 54, so controller 46 can determine the second sample with
It will postpone to postpone to be isolated with as caused by the first data path 54 as caused by the second data path 56.
When using calibration signal described in formula (3), the second part with calibration signal is (for example, N-1 < t≤2N-
1) corresponding second sample of transmission can be as follows:
Wherein F2It (t) is second, τ2It is the relative phase delay of the second data path 56, and α, β and γ are tuning ginsengs
Number.
Then, controller 46 can determine the phase shift between the second part of calibration signal and the second sample of feedback signal
(process frame 142).In some embodiments, for the ease of determining phase shift, controller can determine as follows Nx3 matrix:
M2[i, 1]=(i-1)2；I=[1:N] (10)
M2[i, 2]=(i-1)；I=[1:N]
M2[i, 3]=1；I=[1:N]
Wherein M2It is Nx3 matrix, and N is the duration of the second part of calibration signal.Based on Nx3 matrix, control
Device 46 can determine as follows phase shift:
Φ=(M2 TM2)-1M2 T∠F2 (11)
Wherein Φ is phase shift, F2It is the second sample of feedback signal, and M2It is Nx3 matrix described in formula (9).?
In some examples, phase shift may include quadrantal component, linear component and/or constant complex component.
It is based at least partially on phase shift, controller 46 can determine the relative delay (process frame 144) of the second data path 56.
When using the calibration signal of formula (3), the relative delay of the second data path 56 can be with the second part of calibration signal and the
The linear component of phase shift between two samples is proportional.For example, the relative delay of the second data path 56 can be determined as follows:
Wherein τ2It is the relative phase delay of the second data path 56, Φ [2] is the linear component of phase shift, and α and β are
Tuner parameters.In this manner, controller 46 can determine the relative phase delay of the second data path 56.
As described above, being based at least partially on relative delay, controller 46 can determine the first data path 54 and the second number
According to the time deviation between path 56.For example, controller 46 can relative delay and the second data based on the first data path 54
Difference between the relative delay in path 56 determines time deviation.Therefore, which can indicate the first data path 54
And the second synchronization between data path 56, and therefore, indicate the guarantor of the analog electrical signal of the transmission from radio frequency system 12
True property.For example, the fidelity of the analog electrical signal of transmission can reduce when time deviation increases.
Therefore, the process 81 of Fig. 8 is returned to, controller 46 can determine between the first data path 54 and the second data path 56
Time deviation whether be greater than time deviation threshold value (decision block 86).In some embodiments, time deviation threshold value can be pre-
It is first determined and stored in memory devices 52.Therefore, in such embodiment, controller 46 can retrieval time deviation threshold
Value, and time deviation threshold value is compared with time deviation.Additionally, in some embodiments, time deviation threshold value can
It is set to the estimated indicator for whether leading to acceptable fidelity.Expect for example, time deviation threshold value can be set so that
Time deviation no more than time deviation threshold value leads to acceptable fidelity, and it is expected that is greater than the time of time deviation threshold value
Deviation not will lead to acceptable fidelity.
Therefore, when time deviation is not more than time deviation threshold value, radio frequency system 12 can maintain to be applied to the first data road
Delay (process frame 88) on diameter 54 and the second data path 56.For example, controller 46 can instruct the first delay apparatus 72 to maintain
The current delay being applied on the first data path 54, and the maintenance of the second delay apparatus 78 is instructed to be applied to the second data path
Current delay on 56.
On the other hand, when time deviation is greater than time deviation threshold value, controller 46 can instruct the adjusting of radio frequency system 12 to apply
The delay being added on the first data path 54 and/or the delay (process frame 90) being applied on the second data path 56.For example, working as
The relative delay that time deviation indicates that the relative delay of the first data path 54 is greater than the second data path 56 is more than time deviation
When threshold value, controller 46 can instruct the second delay apparatus 78 to increase the delay being applied on the second data path 56, and/or
The first delay apparatus 72 is instructed to reduce the delay being applied on the first data path 54.Additionally, when time deviation indicates second
When the relative delay that the relative delay of data path 56 is greater than the first data path 54 is more than time deviation threshold value, controller 46 can
The second delay apparatus 78 is instructed to reduce the delay being applied on the second data path 56, and/or the first delay apparatus of guidance
72 increase the delay being applied on the first data path 54.
In some embodiments, controller 46, which can continue to adjust, is applied to the first data path 54 and/or the second data
The delay in path 56, until time deviation is no larger than time deviation threshold value.Additionally, in some embodiments, controller
46 can periodically carry out calibration process 81 to consider the operating characteristic of amplifier apparatus 40 at any time and/or due to environmental condition
The change of such as temperature.For example, when 12 initial power-up of radio frequency system, after a fixed duration, in a certain number of hairs
After sending and/or in any other right times, calibration process 81 is can be performed in controller 46.
Correspondingly, the technical effect of the disclosure includes being changed by the improved fidelity convenient for the analog electrical signal sent
The operation of kind radio frequency system.In some embodiments, radio frequency system can be by adjusting one be applied in amplifier apparatus
Or postpone on multiple data paths to improve the fidelity of the analog electrical signal of transmission, to reduce the time between data path
Deviation.In order to determine that the time deviation between data path, radio frequency system can be based at least partially on sending for calibration signal
Determine the total delay of radio frequency system and the relative delay of each data path.In some embodiments, calibration signal may include
Multiple portions, one data path of each partial activation in multiple part is without motivating other data paths.At least partly
Based on the feedback signal obtained by the transmission of calibration signal, radio frequency system can determine a part of calibration signal and freely to be somebody's turn to do on ground
Phase shift between the corresponding sample for the feedback signal that partial transmission obtains.Additionally, it is based at least partially on the phase shift, is penetrated
Display system can determine the relative delay of each data path, and accordingly, it can be determined that time deviation between data path.
Above-mentioned specific embodiment is shown in an illustrative manner, and it is to be understood that these embodiments can be held
Perhaps various modifications and alternative form.It is also understood that claims are not intended to be limited to particular forms disclosed, but purport
All modifications, equivalents, and substitutions scheme in the spirit and scope that covering falls in the disclosure.
Claims (20)
1. a kind of electronic equipment, the electronic equipment includes radio frequency system, and the radio frequency system is configured as wirelessly sending number
According to wherein the radio frequency system includes:
Amplifier apparatus, the amplifier apparatus includes the first data path and the second data path, wherein the amplifier is set
It is standby to be configured as:
The analog representation of the data is received as analog electrical signal, receives the digital representation of the data as digital telecommunication
Number or the two；And
Based on the first signal exported from first data path and from second data path export second signal come
Generate the analog electrical signal of the amplification for wirelessly sending the data；With
Controller, the controller are configured as:
The radio frequency system is instructed to send calibration signal, the calibration signal includes being configured as motivating first data path
First part and be configured as motivating the second part of second data path；
Determine the feedback signal obtained by the transmission of the calibration signal；
The time between first data path and second data path is determined based on one or more of following
Deviation:
The first phase shift between the first sample of the feedback signal and the first part of the calibration signal；With
The second phase shift between second sample of the feedback signal and the second part of the calibration signal；And
The radio frequency system is instructed to adjust the first delay being applied on first data path based on the time deviation
With at least one of the second delay being applied on second data path.
2. electronic equipment according to claim 1, in which:
The first part of the calibration signal includes the first amplitude component and first phase component, wherein first amplitude
Component changes to motivate first data path, and the first phase component is constant not motivate second number
According to path；And
The second part of the calibration signal includes the second amplitude component and second phase component, wherein the second phase
Component changes to motivate second data path, and first amplitude component is constant not motivate first number
According to path.
3. electronic equipment according to claim 1, wherein the controller is configured as:
The third sample of the feedback signal is determined based on the first duration of the calibration signal；
The total delay of the radio frequency system is determined based on the cross correlation between the third sample and the calibration signal；With
And
The time deviation is determined based on the total delay of the radio frequency system.
4. electronic equipment according to claim 3, wherein the controller is configured as:
The feedback signal is adjusted based on the total delay of the radio frequency system；
After adjusting the feedback signal, determined based on the second duration of the first part of the calibration signal
The first sample of the feedback signal；
Based on described in the first phase in-migration determination between the first sample and the first part of the calibration signal
First relative delay of the first data path, wherein first relative delay is proportional to first phase shift；
The third duration of the second part of the first part and the calibration signal based on the calibration signal
To determine second sample of the feedback signal；
Based on described in the second phase in-migration determination between second sample and the second part of the calibration signal
Second relative delay of the second data path；And
The time deviation is determined based on the difference between first relative delay and second relative delay.
5. electronic equipment according to claim 1, in which:
First data path is configured as amplifying the data by the target output based on the radio frequency system
Amplitude component generates variable voltage signal；
Second data path is configured as adjusting the phase of the data by the target output frequency based on the radio frequency system
The frequency of component generates frequency signal；And
The amplifier apparatus includes switch-mode power amplifier, and the switch-mode power amplifier is configured as based on institute
Variable voltage signal and the frequency signal are stated to promote to generate the analog electrical signal of the amplification.
6. electronic equipment according to claim 1, in which:
First data path is configured as amplifying the data by the target output based on the radio frequency system
Amplitude component generates variable voltage signal；
Second data path is configured as adjusting the frequency of the data by the target output frequency based on the radio frequency system
To generate frequency conversion signal；And
The amplifier apparatus includes linear model power amplifier, and the linear model power amplifier is configured as based on institute
Variable voltage signal and the frequency conversion signal are stated to generate the analog electrical signal of the amplification.
7. electronic equipment according to claim 1, comprising:
Antenna, the antenna are configured as exporting the analog electrical signal of transmission based on the analog electrical signal of the amplification as tune
The radio wave of system；
Coupler, the coupler are configured as feeding back the analog electrical signal of the transmission；With
Local oscillator is fed back, the feedback local oscillator is configured as the frequency of the analog electrical signal by adjusting the transmission
Rate generates the feedback signal.
8. electronic equipment according to claim 1, in which:
First data path includes the first delay apparatus, and first delay apparatus is configured as the first delay being applied to
First signal；
Second data path includes the second delay apparatus, and second delay apparatus is configured as the second delay being applied to
The second signal；And
The controller is configured as:
When the time deviation indicates that the first relative delay of first data path is greater than the of second data path
Two with respect to when being delayed over time deviation threshold value, and guidance first delay apparatus reduces first delay and described second
Delay apparatus increases at least one of described second delay；
It is more than the time deviation threshold when the time deviation indicates that second relative delay is greater than first relative delay
When value, first delay apparatus is instructed to increase by first delay and second delay apparatus reduction, second delay
At least one of；And
Otherwise first delay apparatus is instructed to maintain first delay and second delay apparatus maintenance described second
Delay.
9. electronic equipment according to claim 1, wherein the electronic equipment include computer, it is mobile phone, portable
Media device, tablet computer, TV, virtual reality wear-type device, personal data management device, handheld games platform or vehicle
Instrument board.
10. a kind of tangible non-transitory computer-readable medium, the tangible non-transitory computer-readable medium is configured as storing
The instruction that can be executed by the one or more processors of radio frequency system, wherein described instruction includes being used for instruction below:
Using one or more of processors instruct the radio frequency system by using amplifier apparatus amplify calibration signal with
Target output continuously repeats the transmission of the calibration signal；
The feedback signal obtained by the transmission of the calibration signal is determined using one or more of processors；
The first sample of the calibration signal and the feedback signal is based at least partially on using one or more of processors
Cross correlation between this determines the total delay of the radio frequency system；
Using one or more of processors be based at least partially on the calibration signal first part and the feedback letter
Number the second sample between the first phase in-migration determine first relative delay in the envelope data path in the amplifier apparatus,
Wherein the first part of the calibration signal includes the amplitude component and constant phase component of variation；
Using one or more of processors be based at least partially on the calibration signal second part and the feedback letter
Number third sample between the second phase in-migration determine second relative delay in the phase data path in the amplifier apparatus,
Wherein the second part of the calibration signal includes the phase component of constant amplitude component and variation；And
When the difference between first relative delay and second relative delay is greater than threshold value, using one or more
A processor instructs the first delay apparatus to adjust the be applied on the envelope data path first delay, the second delay of guidance
Equipment come adjust be applied on the phase data path second delay, or both.
11. computer-readable medium according to claim 10, wherein for determining that the described of the radio frequency system always prolongs
Slow described instruction includes being used for instruction below:
The duration of the calibration signal is based at least partially on to determine the first sample；
It is discrete with determine the calibration signal indicated in frequency domain first to calibration signal execution Fast Fourier Transform (FFT)
Fourier transformation；
The Fast Fourier Transform (FFT) is executed to determine the first sample indicated in the frequency domain to the first sample
Second discrete Fourier transform；
Cross-correlation function is determined based on first discrete Fourier transform and second discrete Fourier transform, wherein institute
Cross-correlation function is stated to be configured as indicating the similitude of the calibration signal and the first sample as the function to relatively lag behind；
And
The peak magnitudes of the cross-correlation function are based at least partially on to determine the total delay.
12. computer-readable medium according to claim 10, wherein for determining the described of first relative delay
Instruction includes being used for instruction below:
It is based at least partially on the duration of the total delay of the radio frequency system and the first part of the calibration signal
To determine second sample of the feedback signal；And
First relative delay in the envelope data path is determined, wherein first relative delay and first phase shift
It is proportional.
13. computer-readable medium according to claim 10, wherein for determining the described of second relative delay
Instruction includes being used for instruction below:
Be based at least partially on the total delay of the radio frequency system, the first part of the calibration signal duration,
And the duration of the second part of the calibration signal determines the third sample of the feedback signal；And
Second relative delay in the phase data path is determined, wherein second relative delay and second phase shift
Linear component it is proportional.
14. computer-readable medium according to claim 10, wherein prolonging for first delay apparatus, described second
The described instruction of slow equipment or both includes being used for instruction below:
When second relative delay, which is greater than first relative delay, is more than the threshold value, first delay apparatus is instructed
Increase by first delay, second delay apparatus is instructed to reduce described second delay, or both；And
When first relative delay, which is greater than second relative delay, is more than the threshold value, first delay apparatus is instructed
Reduce first delay, second delay apparatus is instructed to increase described second delay, or both.
15. computer-readable medium according to claim 10, in which:
The amplitude component of the variation of the first part of the calibration signal sinusoidally vibrates；And
The phase component of the variation of the second part of the calibration signal exponentially increases.
16. a kind of for operating the method for being configured as the calibration system of calibration radio frequency system, comprising:
The first signal including the first amplitude component and first phase component is determined using the calibration system, wherein described
One signal is configured as motivating envelope data path without excitation phase data path when transmitting wirelessly from the radio frequency system；
The second signal including the second amplitude component and second phase component is determined using the calibration system, wherein described
The initial value of two amplitude components is equal to the end value of first amplitude component, and the initial value of the second phase component is equal to institute
The end value of first phase component is stated, and the second signal is configured as the excitation when transmitting wirelessly from the radio frequency system
The phase data path is without motivating the envelope data path；
First signal and the second signal are cascaded to generate calibration signal using the calibration system；And
The calibration signal is stored in the radio frequency system using the calibration system, so that the radio frequency system can
The duplicate of the calibration signal is based at least partially on to continuously transmit to adjust be applied on the envelope data path
One delay, the second delay being applied on the phase data path, or both.
17. according to the method for claim 16, wherein storing the calibration signal enables the radio frequency system:
The described of the calibration signal is based at least partially on duplicate to continuously transmit to determine feedback signal；
The duration of the calibration signal is based at least partially on to determine sample from the feedback signal；
The cross correlation between the sample and the calibration signal is based at least partially on to determine the total of the radio frequency system
Delay；And
Be based at least partially on the total delay of the radio frequency system adjust it is described first delay, it is described second delay or
The two.
18. according to the method for claim 16, wherein storing the calibration signal enables the radio frequency system:
The described of the calibration signal is based at least partially on duplicate to continuously transmit to determine feedback signal；
The total delay of the duration and the radio frequency system that are based at least partially on first signal come from by described first
The feedback signal that the transmission of signal obtains determines sample；
The phase in-migration being based at least partially between the sample and first signal determines the phase in the envelope data path
To delay；And
The relative delay in the envelope data path is based at least partially on to adjust first delay, described second prolong
Late, or both.
19. according to the method for claim 16, wherein storing the calibration signal enables the radio frequency system:
The described of the calibration signal is based at least partially on duplicate to continuously transmit to determine feedback signal；
It is based at least partially on the duration of first signal, the duration of the second signal and the radio frequency system
Total delay from the feedback signal obtained by the transmission of the second signal determine sample；
The linear component of the phase shift between the sample and the second signal is based at least partially on to determine the number of phases
According to the relative delay in path；And
The relative delay in the phase data path is based at least partially on to adjust first delay, described second prolong
Late, or both.
20. according to the method for claim 16, in which:
First amplitude component sinusoidally changes；
The first phase component is constant；
Second amplitude component is constant；And
Increase to the second phase component index.
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| US15/218,923 | 2016-07-25 | ||
| US15/218,923 US9577771B1 (en) | 2016-07-25 | 2016-07-25 | Radio frequency time skew calibration systems and methods |
| PCT/US2017/015138 WO2018022140A1 (en) | 2016-07-25 | 2017-01-26 | Radio frequency time skew calibration systems and methods |
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| CN109417363B CN109417363B (en) | 2020-07-28 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US9577771B1 (en) | 2017-02-21 |
| KR102019669B1 (en) | 2019-09-10 |
| KR20190006039A (en) | 2019-01-16 |
| WO2018022140A1 (en) | 2018-02-01 |
| CN109417363B (en) | 2020-07-28 |
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